The radius of a circular ground is $56\,m.$ A $7\,m$ wide road runs around its boundary inside the ground. Some region of the road as shown by shaded part in the diagram is to be repaired. Find the cost of repairing at the rate of ₹ $40 / m ^{2}$ (in ₹)
The radius of a circular ground is $56\,m.$ A $7\,m$ wide road runs around its boundary inside the ground. Some region of the road as shown by shaded part in the diagram is to be repaired. Find the cost of repairing at the rate of ₹ $40 / m ^{2}$ (in ₹)
- A
$12500$
- B
$14600$
- C
$15400$
- D
$10456$
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